Communication cable with strain relief elements applied in the region of the outside cladding

Abstract

A communication cable, which has a cable core provided in the center as well as outside cladding and strain relief elements applied in the region of the outside cladding, has at least one optical transmission element which includes at least one light waveguide, provided in the region of the strain relief elements.

We claim as our invention: 
     
       1. In a communication cable comprising a cable core provided in the center and surrounded by an outside cladding as well as provided with strain relief elements in the region of the outside cladding, the improvement comprising at least one optical transmission element with at least one light waveguide being additionally provided in the region of the strain relief elements, each optical transmission element being arranged in a projection that extends outwardly from the cable cladding and extends along the length of the cladding, each optical transmission element being arranged to extend parallel to a cable axis and proceeds on a straight line with reference to the cable axis. 
     
     
       2. In a communication cable according to claim 1, wherein two optical transmission elements are arranged preferably lying diametrically opposite one another. 
     
     
       3. In a communication cable according to claim 1, wherein each optical transmission element is arranged in its own protective sheath. 
     
     
       4. In a communication cable according to claim 1, wherein the projection with the optical transmission element is partably applied to the cable cladding. 
     
     
       5. In a communication cable according to claim 4, wherein the parted projection with the optical transmission element is employed as an independent optical cable after being separated from the cable cladding. 
     
     
       6. In an optical communication cable according to claim 1, wherein the optical transmission element comprises additional means for improving the tensile strength in the form of element selected from spun elements and woven elements. 
     
     
       7. In a communication cable according to claim 1, wherein the strain relief elements are arranged in a symmetrical configuration with respect to each of the optical transmission elements. 
     
     
       8. In a communication cable according to claim 1, wherein at least two optical transmission elements are provided, and an even number of strain elements are provided for each of optical transmission elements. 
     
     
       9. In a communication cable according to claim 1, wherein the strain relief elements are constructed as metallic conductors. 
     
     
       10. In a communication cable according to claim 1, wherein the outside cladding also co-encloses optical transmission elements. 
     
     
       11. In a communication cable according to claim 1, wherein each of the strain relief elements is provided with means to improve embedding the element in the cladding material, said means being selected from being profiled and an adhesion promoter. 
     
     
       12. In a communication cable according to claim 1, wherein at least one of the strain elements is constructed as a rip thread to provide means for the projection with parting the optical transmission element from the cable. 
     
     
       13. In a communication cable according to claim 1, wherein the cable core is constructed in a center as an electrical cable. 
     
     
       14. In a communication cable according to claim 13, wherein said electrical cable is a coaxial cable. 
     
     
       15. In a communication cable according to claim 1, wherein the cable core is constructed as an optical cable. 
     
     
       16. In a communication cable according to claim 1, wherein the cable core is a central hollow tube capable of having cable subsequently drawn therein. 
     
     
       17. In a communication cable comprising a cable core provided in the center and surrounded by an outside cladding as well as provided with strain relief elements in the region of the outside cladding, the improvement comprising at least one optical transmission element with at least one light waveguide being additionally provided in a projection which extends outwardly from the cable cladding in the region of the strain relief elements, said projection extending along the length of the cladding with the optical element extending parallel to an axis of the cable and proceeding on a straight line with reference to the cable axis, and the strain relief elements being arranged in a symmetrical configuration with respect to each of the optical transmission elements. 
     
     
       18. In a communication cable according to claim 17, which includes two optical transmission elements being arranged in two diametrically opposite projections. 
     
     
       19. In a communication cable according to claim 18, wherein each projection is partable from the cladding to provide an independent optical cable after being separated from the cable cladding. 
     
     
       20. In a communication cable according to claim 17, wherein an even number of strain elements are provided for each of the optical elements.